Are you battling frustrating electrical gremlins in your GMC Sierra, Chevrolet Silverado, or other GM truck? Intermittent power windows, a malfunctioning HVAC system, or random warning lights are common signs of a failing Body Control Module (BCM). The BCM acts as the central command center for your vehicle’s body electronics, and when it fails, it can cause a wide range of confusing issues. This genuine quality GM 25844480 Body Control Module is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play installation.
Expert Pro Tip
Expert Pro Tip
Before replacing your BCM, always check for poor ground connections. A common issue on these GM trucks is a corroded or loose ground under the driver’s side door sill plate or near the BCM’s mounting location. A simple voltage drop test on the ground circuit can save you from replacing a perfectly good module. A bad ground can mimic nearly every symptom of a failed BCM.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors stop working or operate erratically.
- ✔ Interior or exterior lights fail to turn on or off correctly.
- ✔ The HVAC and climate control system becomes unresponsive or the blower motor works intermittently.
- ✔ An airbag warning light appears on the dash, often with a DTC B1001 code.
- ✔ The security system malfunctions, potentially causing a no-start condition.
- ✔ Wipers behave unpredictably or won’t turn off.
- ✔ Communication errors with other vehicle modules are detected during a diagnostic scan.
Why Choose Our Programmed 2013 Sierra 3500 BCM?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the hassle and expense out of the repair by programming the module with the latest GM software updates specific to your truck’s VIN. This critical step ensures that all systems communicate correctly right out of the box, eliminating the need for an expensive trip to the dealership for programming. This module restores the precise control over your vehicle’s electronics that it had from the factory, ensuring reliable and consistent operation.
Installation is straightforward for any DIY mechanic. The BCM is typically located under the driver’s side dash, near the steering column, and can be swapped in minutes. In most cases, no further steps are needed. However, if your vehicle displays an airbag light after installation, a simple “Setup SDM Primary Key in BCM” procedure may be required using a professional-grade scan tool. Additionally, some models may require a Brake Pedal Position Relearn. With no core charge, you can keep your old part without the hassle of returns.
Frequently Asked Questions
Expert Pro Tip
Before replacing your BCM, always check for poor ground connections. A common issue on these GM trucks is a corroded or loose ground under the driver’s side door sill plate or near the BCM’s mounting location. A simple voltage drop test on the ground circuit can save you from replacing a perfectly good module. A bad ground can mimic nearly every symptom of a failed BCM.